Commands

None has a default hotkey; assign them under Settings → Hotkeys.

Command	Does
Look up at cursor	Runs immediately on the typed /thesaurus:: command, else on the selection, else on the word under the cursor. The pick replaces that word.
Open thesaurus history	Opens the history pane on the right. Also the book icon in the ribbon.
Clear cached answers	Forgets every cached lookup (cache.json in the plugin folder).

Inside the box: ↑ ↓ choose, Enter insert, Esc close. See The box.